package com.hmdp.interceptor;


import com.hmdp.utils.UserHolder;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;



public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1.判断是否需要拦截（ThreadLocal中是否有用户）
        if(UserHolder.getUser() == null){
            //没有，需要拦截，设置状态码
            response.setStatus(401);
            return false;
        }
        //有用户，放行
        return true;
    }
}


